<template>
  <div>
    <el-breadcrumb separator-class="ei-icon-arrow-right" name>
  <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>添加商品</el-breadcrumb-item>
  </el-breadcrumb>
  <el-card>
    <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
    <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>

    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
      <el-tabs :before-leave="beforeTabLeave" v-model="activeIndex" :tab-position="'left'" @tab-click="tabClicked">
      <el-tab-pane label="基本信息" name="0">
        <el-form-item label="商品信息" prop="goods_name">
          <el-input v-model="addForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="addForm.goods_price" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="addForm.goods_weight" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="addForm.goods_number" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品分类" prop="goods_cat">
          <el-cascader v-model="addForm.goods_cat" :options="catelist" :props="cateProps" @change="handleChange">
          </el-cascader>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品参数" name="1">
        <el-form-item :label="item.attr_name" v-for="item in manyTableDate" :key="item.arr_id">
        <el-checkbox-group v-model="item.attr_vals">
          <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
        </el-checkbox-group>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品属性" name="2">
        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
        <el-input v-model="item.attr_vals"></el-input>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品图片" name="3">
        <el-upload :on-success="handleSuccess" :headers="headerObj" :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture">
          <el-button size="small" type="primary">点击上传</el-button>
        </el-upload>
      </el-tab-pane>
      <el-tab-pane label="商品内容" name="4">
        <quill-editor v-model="addForm.goods_introduce"></quill-editor>
        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
      </el-tab-pane>
    </el-tabs>
    </el-form>
  </el-card>
  <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">

  </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs:[]
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品信息', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请输入商品分类', trigger: 'blur' }
        ]
      },
      catelist: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      manyTableDate: [],
      onlyTableData: [],
      uploadURL: 'https://www.liulongbin.top:8888/api/private/v1',
      headerObj: {
        Authorization : window.sessionStorage.getItem('token')
      },
      previewPath: '',
      previewVisible:false
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败！')
      }
      this.catelist = res.data
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('选择商品分类')
        return false
      }
    },
   async tabClicked() {
     if (this.activeIndex === '1') {
       const { data: res } = await this.$http.get(
         `categories/${this.cateId}/attributes`,
         { params: { sel: 'many' } }
       
       )
       if (res.meta.status !== 200) {
          return this.$message.error('获取动态列表失败')
       }
       res.data.forEach(item => {
        item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
       })
        this.manyTableDate = res.data
     } else if (this.activeIndex === '2') {
       const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'only' } })
       if (res.meta.status !== 200) {
        this.$message.error('获取静态属性失败!')
       }
      this.onlyTableData = res.data
     }
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url
      this.previewVisible=true
    },
    handleRemove(file) {
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      this.addForm.pics.splice(i,1)
    },
    handleSuccess(response) {
      const picInfo = { pic:response.data.tmp_path}
      this.addForm.pics.push(picInfo)
    },
    add() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        this.manyTableDate.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value:item.attr_vals.join(','),
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach((item) => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error('添加失败')
        }
        this.$message.success('添加成功')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox{
  margin:0 10px 0 0  !important
}
.btnAdd{
  margin-top: 15px;
}
</style>